SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a critical application from on-premises to AWS. The application uses a shared file system for user uploads and logs. The company wants a highly available, durable, and low-latency solution. Which AWS storage service should the company use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon EFS
Amazon EFS provides a shared NFS file system with high availability and durability, making it suitable for user uploads and logs. Option B (Amazon EBS) is block storage and not shared across instances. Option C (Amazon FSx for Windows File Server) is designed for Windows workloads and not ideal for general Linux-based applications. Option D (Amazon S3) is object storage, not a shared file system.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Amazon EFS
Why this is correct
EFS provides a scalable, highly available NFS file system.
- ✗
Amazon EBS
Why it's wrong here
EBS is block storage and cannot be shared across instances.
- ✗
Amazon FSx for Windows File Server
Why it's wrong here
FSx for Windows is for Windows-based workloads, not generic.
- ✗
Amazon S3
Why it's wrong here
S3 is object storage, not a file system; requires SDK changes.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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